Question: What concentration of additives might be found in typical diesel enginecrankcase oil?
问题：在典型的柴油曲柄箱机油中，添加剂的浓度一般是多少？
2
The enginecrankcase and block are usually cast into one piece and therefore can be seem as the largest and most intricate piece of metal in automobile.
发动机曲轴箱和气缸体通常铸造成为一体，因此算作汽车中最大且最复杂的金属结构。
3
The crankshaft revolves in bearings located in the enginecrankcase, but the number of bearings used usually depends on the number of cylinders in the engine, and the design of the engine.